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Dual 506 Service Manual

Dual 506
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Service
Manual
\()
Technical
data
Measured
values
Current
Line
Voltage
Drive
Power
consumption
Sterling
Time
Power
Consumption
Dual
506
Edition
December
1979
typical
values.
Rumble
and
wow
and
flutter
values
obtained
with
test
record.
AC
50
or
60
Hz,
changeable
by
changing
motor
pul
ley
110
125
V
or
220
—240
V,
changeable
Dual
8
-pole
synchronous
motor:
precision
flat
belt
for
flyvvheel
drive
approx.
10
watts
(to
each
nominal
speed)
approx.
2
seconds
at
33
1/3
rpm
at
220
V,
50
Hz:
approx.
75
mA
at
117
V,
60
Hz: approx.
140
mA
Platter
Non-magnetic,
detachable,
1.1
kg,
304
mm
Platter
speeds
33
1/3
and
45
rpm
Pitch
Control
Variation
at
both
platter
speeds.Adjustment
range
at
33
1/3
rpm
approx.
1
semitone
(6
%)
Speed
control
(monitoring)
with
stroboscope
for
platter
speeds
33
1/3
and
45
rpm,
adjustable
to
50
or
60
Hz.
Total
Wow
and
Flutter
DIN
±
0.07
%
WRMS
±
0.04
%
Rumble
Unweighted
48
dB
(according
to
DIN
45
500)
Weighted
70
dB
Tonearm
Torsion-resistant
tubular
aluminum
tonearm
in
fourpoint
gimbal
bearing
Tonearm
Bearing
Friction
vertical
0.07 mN
(0.007
g)
(related
to
stylus
tip)
horizontal
0.15
mN
(0.015
g)
Stylus
Pressure
from
0
-
30
mN
(0
-
3
g)
infinitely
variable
with
1
mN
(0-
1.5
g)
operable
from
5
mN
(0.5
g)
stylus
pressure
up
Cartridges
with
1/2
inch
screw-type
attachment.
These
can
be
fitted
with
the
special
accessories
no.
262
186
which
c,an
be
obtained
from
trade
dealers.
Adjustable
overhang
5
mm.
Weight
approx.
4.1
kg
Download from www.dual.de
Not for commerical use

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Dual 506 Specifications

General IconGeneral
Drive SystemBelt Drive
Speed33 1/3 and 45 RPM
Weight5.5 kg
PlatterNon-magnetic
Wow and Flutter0.08%
TonearmUltra low mass aluminum
Dimensions420 x 360 x 130 mm

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